Notched steel beam and floor slab structure of flange embedded floor slab and construction method

ABSTRACT

The present disclosure relates to a notched steel beam and a floor slab structure of a flange embedded floor slab and a construction method. The notched steel beam comprises a web (1), wherein an upper flange (2) and a lower flange (3) are respectively arranged on the upper end and the lower end of the web (1); the flange embedded floor slab comprises four rectangularly distributed floor slab stand columns (7), a steel beam (8) is arranged between the adjacent floor slab stand columns (7), laminated slab bottom slabs (9) are arranged between the two steel beams (8) which are symmetrically distributed, floor slab reinforcing steel bars (10) are arranged above the laminated slab bottom slabs (9), a concrete layer (11) is arranged on the floor slab reinforcing steel bars (10); and the steel beam (8) is the notched steel beam of the flange embedded floor slab.

CROSS REFERENCE TO RELATED APPLICATION(S)

This patent application claims the benefit and priority of Chinese Patent Application No. 202110224138.X, filed on Feb. 23, 2021, the disclosure of which is incorporated by reference herein in its entirety as part of the present application.

FIELD

The present disclosure relates to construction of a steam beam flange embedded floor slab, in particular to a notched steel beam and a floor slab structure of a flange embedded floor slab and a construction method.

BACKGROUND

The steel structure building has the advantages of being green, environmentally friendly, recyclable, good in anti-seismic performance and the like and completely meets the standards of building industrialization and green buildings, but the occupancy of the steel structure in the building market is not high at present, particularly for large-amount and wide-area residential buildings, the occupancy of the steel structure is not higher than 1%, and the main reason is that the characteristics of high strength and high efficiency of the steel structure are not exerted. An existing steel beam and a floor slab are connected in a mode that the steel beam is located below and the floor slab is located above, and the steel beam and the floor slab are connected through studs. Due to the connection mode, the steel beam occupies much indoor space, the space practical rate is reduced, although the section height of the steel beam is small compared with that of a concrete beam, the section height of the steel beam is almost the same as that of the concrete beam after the slab thickness is added, and the characteristics of light weight and high strength of the steel structure cannot be exerted. Therefore, the problem of low space practical rate exists in the prior art.

SUMMARY

The present disclosure aims to provide a notched steel beam and a floor slab structure of a flange embedded floor slab and a construction method. The notched steel beam has the characteristic that the space practical rate can be effectively increased.

Through the technical scheme of the present disclosure, the notched steel beam of a flange embedded floor slab comprises a web, wherein an upper flange and a lower flange are respectively arranged on the upper end and the lower end of the web; and a notch is formed in the upper flange.

In the notched steel beam of a flange embedded floor slab, the notch is positioned in the middle of the upper flange.

In the notched steel beam of a flange embedded floor slab, the notch is formed in one side or two sides of the upper flange.

In the notched steel beam of a flange embedded floor slab, the web is further provided with a supporting plate positioned between the upper flange and the lower flange.

In the notched steel beam of a flange embedded floor slab, the web is further provided with a concrete bracket positioned between above the lower flange.

In the notched steel beam of a flange embedded floor slab, a pipeline insertion hole is further formed in the web.

In the notched steel beam of a flange embedded floor slab, the web and/or the upper flange are/is further provided with studs, shear keys, dents and/or protrusions.

A floor slab structure of a flange embedded floor slab comprises a plurality of floor slab stand columns, wherein a steel beam is arranged between the adjacent floor slab stand columns, laminated slab bottom slabs are arranged between the two steel beams which are symmetrically distributed, floor slab reinforcing steel bars are arranged above the laminated slab bottom slabs, and a concrete layer is arranged on the floor slab reinforcing steel bars; and the steel beam is the notched steel beam of the flange embedded floor slab.

Anti-cracking steel wire meshes are further arranged in the cast-in-place concrete layer.

A construction method of the floor slab structure of a flange embedded floor slab comprises the following steps:

step one, fixing notched steel beams with corresponding sizes between the adjacent floor slab stand columns;

step two, hoisting laminated slab bottom slabs at the two ends from notches of the notched steel beams respectively and translating the laminated slab bottom slabs to the corresponding ends in place;

step three, hoisting laminated slab bottom slabs in the middle from the notches of the notched steel beams to be in place;

step four, arranging and binding steel bars above the laminated slab bottom slabs to obtain a reinforcing steel bar layer; and

step five, pouring reinforced concrete on the upper reinforcing steel bar layer to obtain a concrete layer.

Compared with the prior art, the gap is formed in the upper flange of the steel beam, and the laminated slab bottom slabs are paved below the upper flange, so that the upper flange of the steel beam is completely immersed into the floor slab, the indoor clearance occupied by the steel beam is reduced, the use clearance of a user is increased, the space practical rate and the utilization rate can be effectively improved, and the building quality is improved. Meanwhile, the upper flange of the steel beam is completely immersed into the floor slab, the cohesiveness of the steel beam and the floor slab can be effectively enhanced, shear connectors such as studs can be omitted, and the manufacturing cost is saved; the upper flange of the steel beam is completely immersed into the floor slab to improve the lateral stability of the steel beam web and reduce the thickness of the web; and the fire resistance of the steel beam can be effectively improved, the fireproof surface area of the steel beam is reduced, and the manufacturing cost can be saved. An opening is formed in the middle of the upper flange of the steel beam, so that the steel consumption can be effectively reduced, and the manufacturing cost is saved.

Although a notch is formed in the middle of the upper flange of the steel beam, the notch is filled with cast-in-place concrete poured in the later period, the middle of the upper flange is a pressed area of the steel beam, the concrete positioned in the pressed area can effectively exert the characteristic of good compressive property, strength and rigidity loss caused by the notch is made up, and it is guaranteed that the strength and rigidity of the whole cross section of the beam are consistent.

The notched steel beam has the characteristic that the space practical rate can be effectively increased.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural schematic diagram of a notched steel beam of a flange embedded floor slab;

FIG. 2 is a structural view of a concrete bracket;

FIG. 3 is an installation view of a notched steel beam of a flange embedded floor slab;

FIG. 4 is an installation view of laminated slab bottom slabs at the ends;

FIG. 5 is a schematic diagram after the installation of the laminated slab bottom slabs at one end is completed;

FIG. 6 is a structural view after the installation of the laminated slab bottom slabs at the two ends is completed;

FIG. 7 is a structural view after the installation of all the laminated slab bottom slabs is completed;

FIG. 8 is a structural view of floor slab reinforcing steel bars;

FIG. 9 is a structural view of a cast-in-place concrete layer; and

FIG. 10 is a structural view of a third embodiment.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure is further illustrated below in combination with the attached figures and embodiment but not as a basis for the limitation of the present disclosure.

Reference signs in the attached figures: 1, web; 2, upper flange; 3, lower flange; 4, notch; 5, supporting plate; 6, concrete bracket; 7, floor slab stand column; 8, steel beam; 9, laminated slab bottom slab; 10, floor slab reinforcing steel bar; and 11, cast-in-place concrete layer.

In the first embodiment, a notched steel beam of a flange embedded floor slab, as shown in FIG. 1, comprises a web 1, wherein an upper flange 2 and a lower flange 3 are respectively arranged on the upper end and the lower end of the web 1; and a notch 4 is formed in the upper flange 2.

The notch is used for placing laminated slab bottom slabs, and the length of the notch is greater than the widths of the laminated slab bottom slabs.

The notch 4 is positioned in the middle of the upper flange 2.

The notch 4 is formed in one side or two sides of the upper flange 2.

The web 1 is further provided with a supporting plate 5 positioned between the upper flange 2 and the lower flange 3. A gap between the supporting plate and the upper flange is used for installing the laminated slab bottom slabs.

A pipeline insertion hole is further formed in the web 1.

The web 1 and/or the upper flange 2 are/is further provided with studs, shear keys, dents and/or protrusions.

A floor slab structure of a flange embedded floor slab, as shown in FIG. 3 to FIG. 9, comprises a plurality of (four rectangularly distributed) floor slab stand columns 7, wherein a steel beam 8 is arranged between the adjacent floor slab stand columns 7, laminated slab bottom slabs 9 are arranged between the two steel beams 8 which are symmetrically distributed, floor slab reinforcing steel bars 10 are arranged above the laminated slab bottom slabs 9, and a concrete layer 11 is arranged on the floor slab reinforcing steel bars 10; and the steel beam 8 is the notched steel beam of the flange embedded floor slab.

Anti-cracking steel wire meshes are further arranged in the cast-in-place concrete layer 11. The diameters of the anti-cracking steel wire meshes are 0.1 mm to 4 mm, and the distance between the meshes is 8 mm to 200 mm.

The notched steel beam can be freely combined with a common steel beam to form a steel beam embedded floor slab at one end and a common structure at the other end.

A construction method of the floor slab structure of a flange embedded floor slab comprises the following steps:

step one, fixing notched steel beams with corresponding sizes between adjacent floor slab stand columns, as shown in FIG. 3;

step two, hoisting laminated slab bottom slabs at the two ends from notches of the notched steel beams respectively and translating the laminated slab bottom slabs to the corresponding ends in place, as shown in FIG. 4, FIG. 5 and FIG. 6;

step three, hoisting laminated slab bottom slabs in the middle from the notches of the notched steel beams to be in place, as shown in FIG. 7;

step four, arranging and binding steel bars above the laminated slab bottom slabs to obtain an reinforcing steel bar layer, as shown in FIG. 8; and

step five, pouring reinforced concrete on the upper reinforcing steel bar layer to obtain a concrete layer, as shown in FIG. 9.

According to the floor slab structure in the present disclosure, a reinforced concrete composite floor slab, a steel bar truss floor bearing plate, a profiled steel plate floor bearing plate or a hollow floor slab can be adopted, the reinforced concrete composite floor slab is taken as an example, but when other types of floor slabs are adopted, the laminated slab bottom slabs are replaced by bottom slabs of corresponding products.

The notch steel beam of a flange embedded floor slab and the floor slab stand columns can be connected through welding, bolt connection or flange welding web bolt connection.

The upper flange can be provided with studs or shear keys for enhancing cohesive force with concrete.

The supporting plate and the web can be connected through welding or bolts.

The angle steel for supporting the floor slab is a structural member and does not participate in overall stress of the steel beam, or reinforced concrete is adopted, or the floor slab is supported by utilizing the lower flange of the steel beam, and the whole beam is arranged in a concrete slab (the lower flange of the beam is also arranged outside the slab).

In the second embodiment, a notched steel beam of a flange embedded floor slab, as shown in FIG. 1, comprises a web 1, wherein an upper flange 2 and a lower flange 3 are respectively arranged on the upper end and the lower end of the web 1; and a notch 4 is formed in the upper flange 2.

The notch is used for placing laminated slab bottom slabs, and the length of the notch is greater than the widths of the laminated slab bottom slabs.

The notch 4 is positioned in the middle of the upper flange 2.

The notch 4 is formed in one side or two sides of the upper flange 2.

The web 1 is further provided with a concrete bracket 6 positioned between above the lower flange 3. A gap between the concrete bracket 6 and the upper flange is used for supporting the laminated slab bottom slabs.

A pipeline insertion hole is further formed in the web 1.

The web 1 and/or the upper flange 2 are/is further provided with studs, shear keys, dents and/or protrusions.

A floor slab structure of a flange embedded floor slab comprises a plurality of (four rectangularly distributed) floor slab stand columns 7, wherein a steel beam 8 is arranged between the adjacent floor slab stand columns 7, laminated slab bottom slabs 9 are arranged between the two steel beams 8 which are symmetrically distributed, floor slab reinforcing steel bars 10 are arranged above the laminated slab bottom slabs 9, and a concrete layer 11 is arranged on the floor slab reinforcing steel bars 10; and the steel beam 8 is the notched steel beam of the flange embedded floor slab.

Anti-cracking steel wire meshes are further arranged in the cast-in-place concrete layer 11. The diameters of the anti-cracking steel wire meshes are 0.1 mm to 4 mm, and the distance between the meshes is 8 mm to 200 mm.

The notched steel beam can be freely combined with a common steel beam to form a steel beam embedded floor slab at one end and a common structure at the other end.

A construction method of the floor slab structure of a flange embedded floor slab comprises the following steps:

step one, fixing notched steel beams with corresponding sizes between adjacent floor slab stand columns, as shown in FIG. 3;

step two, hoisting laminated slab bottom slabs at the two ends from notches of the notched steel beams respectively and translating the laminated slab bottom slabs to the corresponding ends in place;

step three, hoisting laminated slab bottom slabs in the middle from the notches of the notched steel beams to be in place; step four, arranging and binding steel bars above the laminated slab bottom slabs to obtain an upper reinforcing steel bar layer; and

step five, pouring reinforced concrete on the upper reinforcing steel bar layer to obtain a concrete layer.

According to the floor slab structure in the present disclosure, a reinforced concrete composite floor slab, a steel bar truss floor bearing plate, a profiled steel plate floor bearing plate or a hollow floor slab can be adopted, the reinforced concrete composite floor slab is taken as an example, but when other types of floor slabs are adopted, the laminated slab bottom slabs are replaced by bottom slabs of corresponding products.

The notch steel beam of a flange embedded floor slab and the floor slab stand columns can be connected through welding, bolt connection or flange welding web bolt connection.

The upper flange can be provided with studs or shear keys for enhancing cohesive force with concrete.

The supporting plate and the web can be connected through welding or bolts.

The angle steel for supporting the floor slab is a structural member and does not participate in overall stress of the steel beam, or the manner that the web is packaged with reinforced concrete is adopted, or the floor slab is supported by utilizing the lower flange of the steel beam, and the whole beam is arranged in a concrete slab (the lower flange of the beam is also arranged outside the slab).

In the third embodiment, a notched steel beam of a flange embedded floor slab, as shown in FIG. 10, comprises a web 1, wherein an upper flange 2 and a lower flange 3 are respectively arranged on the upper end and the lower end of the web 1; and a notch 4 is formed in the upper flange 2.

The notch 4 is formed in one side or two sides of the upper flange 2.

The notch is used for placing laminated slab bottom slabs, and the length of the notch is greater than the widths of the laminated slab bottom slabs.

When the beam height is reduced to be as high as the floor slab, the lower flange of the steel beam is directly used as a support of the floor slab.

The notch 4 is positioned in the middle of the upper flange 2.

A pipeline insertion hole is further formed in the web 1.

The web 1 and/or the upper flange 2 are/is further provided with studs, shear keys, dents and/or protrusions.

A floor slab structure of a flange embedded floor slab comprises a plurality of (four rectangularly distributed) floor slab stand columns 7, wherein a steel beam 8 is arranged between the adjacent floor slab stand columns 7, laminated slab bottom slabs 9 are arranged between the two steel beams 8 which are symmetrically distributed, floor slab reinforcing steel bars 10 are arranged above the laminated slab bottom slabs 9, and a concrete layer 11 is arranged on the floor slab reinforcing steel bars 10; and the steel beam 8 is the notched steel beam of the flange embedded floor slab.

Anti-cracking steel wire meshes are further arranged in the cast-in-place concrete layer 11. The diameters of the anti-cracking steel wire meshes are 0.1 mm to 4 mm, and the distance between the meshes is 8 mm to 200 mm.

The notched steel beam can be freely combined with a common steel beam to form a steel beam embedded floor slab at one end and a common structure at the other end.

A construction method of the floor slab structure comprises the following steps:

step one, fixing notched steel beams with corresponding sizes between adjacent floor slab stand columns, as shown in FIG. 3;

step two, hoisting laminated slab bottom slabs at the two ends from notches of the notched steel beams respectively and translating the laminated slab bottom slabs to the corresponding ends in place;

step three, hoisting laminated slab bottom slabs in the middle from the notches of the notched steel beams to be in place;

step four, arranging and binding steel bars above the laminated slab bottom slabs to obtain an reinforcing steel bar layer; and

step five, pouring reinforced concrete on the upper reinforcing steel bar layer to obtain a concrete layer.

According to the floor slab structure in the present disclosure, a reinforced concrete composite floor slab, a steel bar truss floor bearing plate, a profiled steel plate floor bearing plate or a hollow floor slab can be adopted, the reinforced concrete composite floor slab is taken as an example, but when other types of floor slabs are adopted, the laminated slab bottom slabs are replaced by bottom slabs of corresponding products.

The notch steel beam of a flange embedded floor slab and the floor slab stand columns can be connected through welding, bolt connection or flange welding web bolt connection.

The upper flange can be provided with studs or shear keys for enhancing cohesive force with concrete.

The supporting plate and the web can be connected through welding or bolts.

The angle steel for supporting the floor slab is a structural member and does not participate in overall stress of the steel beam, or the manner that the web is packaged with reinforced concrete is adopted, or the floor slab is supported by utilizing the lower flange of the steel beam, and the whole beam is arranged in a concrete slab (the lower flange of the beam is also arranged outside the slab).

It will be readily understood that the components of various embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present invention, as represented in the attached figures, is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.

The features, structures, or characteristics of the invention described throughout this specification may be combined in any suitable manner in one or more embodiments. For example, reference throughout this specification to “certain embodiments,” “some embodiments,” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases “in certain embodiments,” “in some embodiment,” “in other embodiments,” or similar language throughout this specification do not necessarily all refer to the same group of embodiments and the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

It should be noted that reference throughout this specification to features, advantages, or similar language does not imply that all of the features and advantages that may be realized with the present invention should be or are in any single embodiment of the invention. Rather, language referring to the features and advantages is understood to mean that a specific feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention. Thus, discussion of the features and advantages, and similar language, throughout this specification may, but do not necessarily, refer to the same embodiment.

Furthermore, the described features, advantages, and characteristics of the invention may be combined in any suitable manner in one or more embodiments. One skilled in the relevant art will recognize that the invention can be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments of the invention.

One having ordinary skill in the art will readily understand that the invention as discussed above may be practiced with steps in a different order, and/or with hardware elements in configurations which are different than those which are disclosed.

Therefore, although the invention has been described based upon these preferred embodiments, it would be apparent to those of skill in the art that certain modifications, variations, and alternative constructions would be apparent, while remaining within the spirit and scope of the invention. In order to determine the metes and bounds of the invention, therefore, reference should be made to the appended claims. 

1. A notched steel beam of a flange embedded floor slab, comprising a web (1), wherein an upper flange (2) and a lower flange (3) are respectively arranged on the upper end and the lower end of the web (1); and a notch (4) is formed in the upper flange (2).
 2. The notched steel beam of a flange embedded floor slab according to claim 1, wherein the notch (4) is positioned in the middle of the upper flange (2).
 3. The notched steel beam of a flange embedded floor slab according to claim 1, wherein the notch (4) is formed in one side or two sides of the upper flange (2).
 4. The notched steel beam of a flange embedded floor slab according to claim 1, wherein the web (1) is further provided with a supporting plate (5) positioned between the upper flange (2) and the lower flange (3).
 5. The notched steel beam of a flange embedded floor slab according to claim 1, wherein the web (1) is further provided with a concrete bracket (6) positioned between above the lower flange (3).
 6. The notched steel beam of a flange embedded floor slab according to claim 1, wherein a pipeline insertion hole is further formed in the web (1).
 7. The notched steel beam of a flange embedded floor slab according to claim 1, wherein the web (1) and/or the upper flange (2) are/is further provided with studs, shear keys, dents and/or protrusions.
 8. A floor slab structure of a flange embedded floor slab, comprising: a plurality of floor slab stand columns (7), wherein a steel beam (8) is arranged between the adjacent floor slab stand columns (7), laminated slab bottom slabs (9) are arranged between the two steel beams (8) which are symmetrically distributed, floor slab reinforcing steel bars (10) are arranged above the laminated slab bottom slabs (9), and a concrete layer (11) is arranged on the floor slab reinforcing steel bars (10); and the steel beam (8) is the notched steel beam of the flange embedded floor slab.
 9. The floor slab structure of a flange embedded floor slab according to claim 8, wherein the notch (4) is positioned in the middle of the upper flange (2).
 10. The floor slab structure of a flange embedded floor slab according to claim 8, wherein the notch (4) is formed in one side or two sides of the upper flange (2).
 11. The floor slab structure of a flange embedded floor slab according to claim 8, wherein the web (1) is further provided with a supporting plate (5) positioned between the upper flange (2) and the lower flange (3).
 12. The floor slab structure of a flange embedded floor slab according to claim 8, wherein the web (1) is further provided with a concrete bracket (6) positioned between above the lower flange (3).
 13. The floor slab structure of a flange embedded floor slab according to claim 8, wherein a pipeline insertion hole is further formed in the web (1).
 14. The floor slab structure of a flange embedded floor slab according to claim 8, wherein the web (1) and/or the upper flange (2) are/is further provided with studs, shear keys, dents and/or protrusions.
 15. The floor slab structure of a flange embedded floor slab according to claim 8, wherein anti-cracking steel wire meshes are further arranged in the cast-in-place concrete layer (11).
 16. The floor slab structure of a flange embedded floor slab according to claim 9, wherein anti-cracking steel wire meshes are further arranged in the cast-in-place concrete layer (11).
 17. The floor slab structure of a flange embedded floor slab according to claim 10, wherein anti-cracking steel wire meshes are further arranged in the cast-in-place concrete layer (11).
 18. The floor slab structure of a flange embedded floor slab according to claim 11, wherein anti-cracking steel wire meshes are further arranged in the cast-in-place concrete layer (11).
 19. The floor slab structure of a flange embedded floor slab according to claim 12, wherein anti-cracking steel wire meshes are further arranged in the cast-in-place concrete layer (11).
 20. A construction method of the floor slab structure of a flange embedded floor slab, comprising the following steps: fixing notched steel beams with corresponding sizes between adjacent floor slab stand columns; hoisting laminated slab bottom slabs at the two ends from notches of the notched steel beams respectively and translating the laminated slab bottom slabs to the corresponding ends in place; hoisting laminated slab bottom slabs in the middle from the notches of the notched steel beams to be in place; arranging and binding steel bars above the laminated slab bottom slabs to obtain an upper reinforcing steel bar layer; and pouring reinforced concrete on the upper reinforcing steel bar layer to obtain a concrete layer. 